HomeFish encyclopediaRay-finned fishesPerch-like fishRemorasWhalesucker Whalesucker (Remora australis) Scientific name: Remora australis Bennett, 1840 The Whalesucker (Remora australis) is a marine fish of the family Echeneidae. Native range: Worldwide in tropical and warm waters. Western Atlantic, Texas, USA to Brazil. Eastern Pacific: Vancouver Island in British Columbia, Canada to Chile. BiologyDorsal spines (total): 25 - 27; Dorsal soft rays (total): 20-23; Anal spines: 0; Anal soft rays: 20 - 24. Dark blue to slate grey; fins with narrow white edge.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameRemora australisFamilyEcheneidae (Remoras)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length76.0EnvironmentMarine; pelagic-oceanic; oceanodromousClimateSubtropicalDistributionWorldwide in tropical and warm waters. Western Atlantic: Texas, USA to Brazil. Eastern Pacific: Vancouver Island in British Columbia, Canada to Chile.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026